Some of these are good.
http://www.youtube.com/results?searc...&oq=ferrofluid
Mark
Quote:
Originally Posted by Baddad
Sounds like interesting stuff. I'd like to see it Marko. 
When I was a pre-teenager a pharmacy student showed me how to float a steel sewing needle on water. Its done by maintaining the surface tension of the water intact. 
On observing the floating needle there is a depression on the water surface where the needle floats. |
Last edited by marki; 17-03-2009 at 06:39 PM.
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